What do the numbers below the Turbulence symbols mean? Example: (160/90)

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Multiple Choice

What do the numbers below the Turbulence symbols mean? Example: (160/90)

These numbers show the vertical extent of turbulence in hundreds of feet. The left value is the upper limit (highest altitude) of the turbulent layer, and the right value is the lower limit (lowest altitude). So 160/90 means turbulence is forecast from 9,000 ft up to 16,000 ft above mean sea level. They’re not about wind gusts or cloud height—they solely indicate the altitude band where turbulence is expected.

These numbers show the vertical extent of turbulence in hundreds of feet. The left value is the upper limit (highest altitude) of the turbulent layer, and the right value is the lower limit (lowest altitude). So 160/90 means turbulence is forecast from 9,000 ft up to 16,000 ft above mean sea level. They’re not about wind gusts or cloud height—they solely indicate the altitude band where turbulence is expected.

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